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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

NT157 has antineoplastic effects and inhibits IRS1/2 and STAT3/5 in JAK2(V617F)-positive myeloproliferative neoplasm cells

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Autor(es):
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Fenerich, Bruna Alves [1, 2] ; Fernandes, Jaqueline Cristina [1, 2] ; Rodrigues Alves, Ana Paula Nunes [1, 2] ; Coelho-Silva, Juan Luiz [1, 2] ; Scopim-Ribeiro, Renata [1, 2] ; Scheucher, Priscila Santos [1] ; Eide, Christopher A. [3, 4] ; Tognon, Cristina E. [3, 4] ; Druker, Brian J. [3, 4] ; Rego, Eduardo Magalhaes [5, 1, 2] ; Machado-Neto, Joao Agostinho [6, 1] ; Traina, Fabiola [1, 2]
Número total de Autores: 12
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Sch Med, Dept Med Images Hematol & Clin Oncol, Ribeirao Preto, SP - Brazil
[2] Sao Paulo Res Fdn, Ctr Cell Based Therapy, Ribeirao Preto, SP - Brazil
[3] Oregon Hlth & Sci Univ, Knight Canc Inst, Portland, OR 97201 - USA
[4] Howard Hughes Med Inst, Portland, OR - USA
[5] Univ Sao Paulo, Sch Med, Dept Internal Med, Sao Paulo - Brazil
[6] Univ Sao Paulo, Dept Pharmacol, Inst Biomed Sci, Sao Paulo - Brazil
Número total de Afiliações: 6
Tipo de documento: Artigo Científico
Fonte: SIGNAL TRANSDUCTION AND TARGETED THERAPY; v. 5, n. 1 JAN 24 2020.
Citações Web of Science: 0
Resumo

Recent data indicate that IGF1R/IRS signaling is a potential therapeutic target in BCR-ABL1-negative myeloproliferative neoplasms (MPN); in this pathway, IRS2 is involved in the malignant transformation induced by JAK2(V617F), and upregulation of IGF1R signaling induces the MPN phenotype. NT157, a synthetic compound designed as an IGF1R-IRS1/2 inhibitor, has been shown to induce antineoplastic effects in solid tumors. Herein, we aimed to characterize the molecular and cellular effects of NT157 in JAK2(V617F)-positive MPN cell lines (HEL and SET2) and primary patient hematopoietic cells. In JAK2(V617F) cell lines, NT157 decreased cell viability, clonogenicity, and cell proliferation, resulting in increases in apoptosis and cell cycle arrest in the G(2)/M phase (p < 0.05). NT157 treatment inhibited IRS1/2, JAK2/STAT, and NF kappa B signaling, and it activated the AP-1 complex, downregulated four oncogenes (CCND1, MYB, WT1, and NFKB1), and upregulated three apoptotic-related genes (CDKN1A, FOS, and JUN) (p < 0.05). NT157 induced genotoxic stress in a JAK2/STAT-independent manner. NT157 inhibited erythropoietin-independent colony formation in cells from polycythemia vera patients (p < 0.05). These findings further elucidate the mechanism of NT157 action in a MPN context and suggest that targeting IRS1/2 proteins may represent a promising therapeutic strategy for MPN. (AU)

Processo FAPESP: 15/02200-2 - Investigação funcional da participação de IRS2 em neoplasias mieloproliferativas crônicas BCR-ABL1 negativas
Beneficiário:Fabíola Traina
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 15/09324-9 - Investigação do efeito do tratamento combinado de inibidores farmacológicos de JAK2 e IRS2 ou mTOR em células JAK2 V617F
Beneficiário:Bruna Alves Fenerich
Linha de fomento: Bolsas no Brasil - Mestrado
Processo FAPESP: 13/08135-2 - CTC - Centro de Terapia Celular
Beneficiário:Dimas Tadeu Covas
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
Processo FAPESP: 14/50947-7 - INCT 2014: em Células Tronco e Terapia Celular no Câncer
Beneficiário:Dimas Tadeu Covas
Linha de fomento: Auxílio à Pesquisa - Temático